化工设备中的圆管制件,以往大都采用传统的图解方法以直尺、圆规进行放样,不够精确,生产效率也低。本文用图解计算方法设计了圆管制件展开下料的通用程序,可用于PC-1500机。程序给出展开图各部尺寸并画出圆管制件及其展开示意图,人们可据此直接排板下料,提高了工效。 In the past, most of the round pipe parts in chemical equipment were staked out by ruler and compass in the traditional graphic method, which was not precise enough and the production efficiency was also low. In this paper, the graphic calculation method is used to design a common procedure for unwinding the pipe parts, which can be used in the PC-1500 machine. Procedures are given to expand the size of various ministries and draw the pipe parts and its expansion diagram, according to which people can directly under the billboards to improve work efficiency.